parson



(No Model.)

H. E. PARSON. Airend Steam Injector for Furnaces.

Patented May 17,1881.

N0..241,7 IO.

WITNESSES ATTORNEY UNITED STATES PATENT Grinch...

l HENRY E. PARSON, OF NEW YORK, N. Y.

AIR AND STEAM INJECTOR FOR FURNACES.

SPECIFICATION forming part of Letters Patent No. 241,710, dated May 17,1881. Application filed September 14, 1880. (No model.)

To all whom it may concern:

Be it known that I, HENRY E. PARSON, of the city, county, and State ofNew York, have invented certain new and useful Improvements in Air andSteam Injectors for Furnaces, of which the following is a specification.

Thisinvention relates to improvements in the-hydrocarbon-injector forwhich Letters Patenthavebeen granted to me under'date of June 5, 1877,and numbered 191,546, by which the same is simplified in constructionandadapted to throw a mixture of steam and air into the furnace of asteam-boiler for the purpose 'of aiding in the combustion of the fueland increasin g the amount of heat to be obtained therefrom Theinvention consists of an annular steamehamber which is connected by apipe to the steam-boiler, and provided at one end with a cylindricalnozzle, which is adjusted by a handwheel in a guide-cylinder of thesteam chamber. To the opposite end of the steam-chamber is applied anair-tube, the tapering inner end of which forms, in connection with thecorrespondin gly-taperin g inner end of the nozzle, anarrow annulardischargeeorifice for the steam, which, in beingforced through thenozzle, draws in the air through the air-tube andforces it through anexterior casin g and conducting-trunk into the furnace.

The accompanyingdrawiu g represents avertical longitudinal section of myimproved air and steam injector for furnaces of all kinds.

A in the drawing represents the exterior casing of my improved air andstealni injector, which casing is connected by a trunk, B, with theash-pit of a steam-boiler or other furnace, opening below the grate ofthe same. 1

At the inside of the casin g A is arranged the injector O, the annularsteam-chamber D of which is connected by a pipe, D, to; a steamboiler.The annular steam-chamberD is provided at one end with a cylindricalextension, 1), within which is guided a cylindrical nozzle, E, asteam-tight connection between the guide-cylinder and nozzle beingobtained by a packing-nuhD". The nozzle E has an exterior screw-threadat its inner end, by which'and a hand-wheel, E, at its outer end it maybe screwed into or out of the guide-cylinder D which has a correspondinginterior thread. The hand-wheel E is readily taken hold of for adjustingthe nozzle E by opening a hinged m. We. l

door, a, of the casing A. The contact-surface of the guide-cylinder D ofthe steam-chamber and nozzle E is lubricated by an oil-cup, d, by whichthe motion of the guide-cylinder during adjustment is facilitated. Theguide-cylinder D is further provided with a small petcock, e, fordischarging the condensed steam. To the opposite end of the annularsteam-chamber D is applied an air-tube, F,which is preferably made ofcone or funnel shape and provided at its inner edge with an exteriorconically-tapering seat, f, which is accurately fitted into the conicalrear end of the nozzle E.

Back of the conical seat of the air-tube F is arranged a shoulder, j",against which the inner end of the nozzle abuts when the same is turnedback sufficiently.

Between the tapering seat of the air-tube and the conical inner edge ofthe nozzle is formed a narrow annular orifice or throat, through whichthe steam is forced on its way from the steam-chamber into the nozzle.The amount of steam passing through the nozzle is controlled byenlarging or contracting the escape orifice or throat by the adjustmentof the nozzle in its guide-cylinder. The steam escapes in the shape of acone into the nozzle, and creates thereby a partial vacuum, which drawsin the air through the air-tube, causing the same to rush forward andbecome heated and expanded by the steam. The body of steam, issuingthrough the discharge-orifice of the nozzle, exerts also a suction uponthe air surrounding the injector in the casing A, which air mingles withthe steam and the air drawn in through the air-tube, being conducted bythe trunk B to the ash-pit and into the fire, where the steam isdecomposed into hydrogen and oxygen and burned, together with the airthrown in by the injector. A more perfect combustion and utilization ofthe fuel is thereby secured and an increased amount of heat generated,so that a considerable saving in fuel results from the application ofthe air and steam injector.

Having thus described my invention,I claim as new and desire to secureby Letters Patent-- 1. In an air and steam injector for furnaces, thecombination of an interior injector having an annular steam-chamber, anadjustable nozzle at one end and a fixed air-tube at the oppo site endof the steam-chamber, with an inclosing-casing, which is open at one endand pro- ,Vidcd with a conducting-trunk at the opposite end, in front ofthe nozzle of the injector, substantially as set forth.

2. A steam and air injector for furnaces, consisting of an annularsteam-chamber, of an adjustable cylindrical nozzle at one end, and of anair-supply tube at the other end, the airtube extendingthrongh thesteam-chamberand into the rear part of the nozzle, substantially as setforth.

3. In an air and steam injector for furnaces, the combination of anannular steam-chamber having a guide-cylinder and packing-nut at one endand afixed air-tube at the other end with an adjustable cylindricalnozzle, which forms, with the air-tube, a narrow annular orifice orthroat, substantially as described.

4. In an air and steam injector for furnaces, the combination of anannular steam-chamber having a guide-cylinder and packing-nut with anadjustable cylindrical nozzle at one end and a fixed air-tube at theother end of the steamchamber, the adjoining inner ends of the nozzleand air-tube being made tapering, so as to form a narrow annular issuingorifice or throat, substantially as described.

In testimony that I claim the foregoing as my invention I have signedmyname, in presence of two witnesses, this 11th day of September, 1880.

HENRY E. IARSON.

Witnesses:

PAUL GOEPEL, CARL KARI.

